How Big Can a Shed Be Without a Permit in Ontario 2025?

Recently, Ontario has witnessed a significant transformation in its building regulations, specifically concerning building sheds in your backyard.

The recent bylaw amendment we’ll discuss in this article has generated considerable interest among homeowners, as it now permits the construction of sheds up to 15 square meters without the need for a building permit. This regulatory update aims to simplify the process of adding functional and aesthetically pleasing outdoor storage to your property.

Recently, Ontario has made changes to its building regulations regarding backyard sheds. As of 2025, homeowners can now build sheds up to 160 square feet (15 square meters) without needing a building permit, provided they meet the following criteria. This new rule defines the size of shed without permit in Ontario, making it easier for homeowners to add functional storage spaces to their properties.

Understanding the Bylaw Change

To grasp the implications of the bylaw change fully, let’s dive into the specific amendment made to Article 1.3.1.1. of Division C of the Ontario Building Code:

1. (6) A shed is now exempt from the requirement to obtain a permit under section 8 of the Act and is also exempt from compliance with this Code, provided that the shed:
   1. (a) occupies an area no greater than 15 m2,
   2. (b) stands no taller than one storey,
   3. (c) remains unattached to any building or structure,
   4. (d) is solely used for storage purposes related to the primary building on the lot, and
   5. (e) lacks plumbing.

These revisions signify that you can now embark on your shed construction project without the bureaucratic hurdles of obtaining a permit, provided you meet these specified criteria.

If you’d like to review the entire building code, you can find it here: Ontario Building Code.

Benefits of the New Regulations

Ontario’s updated shed regulations offer numerous advantages for homeowners:

1. Streamlined Process: The most significant benefit is eliminating the need for a building permit when constructing a shed on your property. This saves both time and administrative hassle.
2. Expanded Design Possibilities: With the maximum allowable shed size increased to 15 square meters, you have more creative space to work with. This allows for the creation of a spacious storage area or even the conversion of your shed into a versatile backyard retreat.
3. Enhanced Creative Freedom: The absence of strict permit requirements grants you the creative freedom to design your shed to match your property’s aesthetics seamlessly.

Design Ideas and Tips

To help you make the most of this opportunity, consider these design ideas and tips for your upcoming shed project:

1. Multi-Purpose Sheds: Explore the concept of multi-purpose sheds that can serve as storage spaces, workshops, gardening sheds, or even small home offices.
2. Aesthetic Harmony: Ensure that your shed’s design harmonizes with your home’s aesthetics. Choose materials, colours, and finishes that complement your property’s overall appearance.
3. Solid Foundations: Invest in a robust foundation for your shed to prevent moisture-related issues and extend its lifespan.
4. Regular Maintenance: Regular maintenance is crucial to keep your shed in top condition. Regularly clean the exterior, inspect for damages, and make necessary repairs.

Conclusion: The recent bylaw change in Ontario has paved the way for a hassle-free and creative approach to constructing your dream backyard shed. Stay tuned for our upcoming article, where we’ll delve even deeper into this topic, helping you seize these exciting opportunities to enhance your outdoor living space. Soares Landscaping remains your trusted partner in creating beautiful and functional outdoor environments.

FAQ on Shed Regulations in Ontario 2025

What is the maximum shed size without a permit in Ontario?
You can build a shed up to 160 square feet (15m²) without a permit in Ontario.

Do I need a permit to build a storage shed in Ontario?
No, if your storage shed is under 160 square feet, no permit is needed.

How big of a shed can I build without a permit in Ontario 2025?
The maximum shed size without a permit is 160 square feet (15m²).

What are the Ontario building code shed size rules for 2025?
The Ontario Building Code shed size allows up to 160 square feet without a permit.

How many sheds can you have on a property in Ontario?
There’s no limit on the number of sheds, as long as each is within size regulations.

How big can a shed be without a building permit in Ontario?
A shed can be 160 square feet (15m²) without a building permit in Ontario.

Do you need a building permit to build a shed in Ontario?
If your shed is under 160 square feet, you don’t need a building permit.

What are the regulations for garden sheds in Ontario?
Garden sheds in Ontario up to 160 square feet do not require a permit.

Can I build a shed without a permit if it exceeds the maximum size?
If the shed exceeds 160 square feet, you will need a building permit.

Have questions?

If you have any questions, feel free to send us a message. Have a no-obligation conversation with us about your outdoor living space. If we can’t help you, we’ll find you someone that can help you.